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To: user@cassandra.apache.org
Cc: user@cassandra.apache.org
From: Aaron Morton <aaron@thelastpickle.com>
Subject: Re: Monitoring with Cacti
Date: Sun, 12 Sep 2010 20:40:03 GMT
Message-id: <06fd0407-ab5c-4671-b967-ccd380b8f9fa@me.com>
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This is my first encounter with cacti, and it's feels a lot like having a =
cactus violently inserted in me :) Hopefully this week I can get back to i=
t with a clearer head, part of my annoyance was probably trying to rush it=
 through on a Friday and it's somewhat taxing configuration.=A0=0A=0AOver =
the weekend I was thinking about going with some python (our in house=A0fa=
vorite) in front of the jmxterm jar.=A0=0A=0AI'll also try to learn a bit =
more about cacti, it cannot be as hard as it seemed on Friday.=A0=0A=0AI'l=
l email you out of the list this week if I make some progress.=A0=0A=0AAar=
on=0A=0A=0AOn 11 Sep, 2010,at 03:31 PM, Edward Capriolo <edlinuxguru@gmail=
com> wrote:=0A=0AOn Fri, Sep 10, 2010 at 7:29 PM, aaron morton <aaron@the=
lastpickle.com> wrote:=0A> Am going through the rather painful process of =
trying to monitor cassandra using Cacti (it's what we use at work). At the=
 moment it feels like a losing battle :)=0A>=0A> Does anyone know of some =
cacti resources for monitoring the JVM or Cassandra metrics other than...=0A=
>=0A> mysql-cacti-templates=0A> http://code.google.com/p/mysql-cacti-templ=
ates/=0A> - provides templates and data sources that require ssh and can m=
onitor JVM heap and a few things.=0A>=0A> Cassandra-cacti-m6=0A> http://ww=
w.jointhegrid.com/cassandra/cassandra-cacti-m6.jsp=0A> Coded for version 0=
6* , have made some changes to stop it looking for stats that no longer e=
xist. Missing some metrics I think but it's probably the best bet so far. =
If I get it working I'll contribute it back to them. Most of the problems =
were probably down the how much effort it takes to setup cacti.=0A>=0A> jm=
xterm=0A> http://www.cyclopsgroup.org/projects/jmxterm/=0A> Allows for com=
mand line access to JMX. I started down the path of writing a cacti data s=
ource to use this just to see how it worked. Looks like a lot of work.=0A>=
=0A> Thanks for any advice.=0A> Aaron=0A>=0A>=0A=0ASetting up cacti is eas=
y, the second time, and third time :)=0AAs for cassandra-cacti-m6 (i am th=
e author). Unfortunately, I have=0Abeen fighting the jmx switcharo battle =
for about 3 years now=0Ahadoop/hbase/cassandra/hornetq/vserver=0A=0AIn a n=
utshell there is ALWAYS work involved. First, is because as you=0Anoticed =
attributes change/remove/add/renamed. Second it takes a human=0Ato logical=
ly group things together. For example, if you have two items=0A"cache hits=
" and "cache misses". You really do not want two separate=0Agraphs that wi=
ll scale independently. You want one slick stack graph,=0Awith nice colors=
, and you want a CDEF to calculate the cache hit=0Apercentage by dividing =
one into the other and show that at the bottom.=0A=0AIf you want to have a=
 7.0 branch to cassandra-cacti-m6 I would love=0Athe help. We are not on 7=
0 yet so I have not had the time just to go=0Aout and make graphs for a v=
ersion we are not using yet :) but if you=0Acome up with patches they are =
happily accepted.=0A=0AEdward=0A
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<html><body><div>This is my first encounter with cacti, and it's feels a lot like havi=
ng a cactus violently inserted in me :) Hopefully this week I can get back=
 to it with a clearer head, part of my annoyance was probably trying to ru=
sh it through on a Friday and it's somewhat taxing configuration.&nbsp;</d=
iv><div><br></div><div>Over the weekend I was thinking about going with so=
me python (our in house&nbsp;favorite) in front of the jmxterm jar.&nbsp;<=
/div><div><br></div><div>I'll also try to learn a bit more about cacti, it=
 cannot be as hard as it seemed on Friday.&nbsp;</div><div><br></div><div>=
I'll email you out of the list this week if I make some progress.&nbsp;</d=
iv><div><br></div><div>Aaron</div><div><br><br>On 11 Sep, 2010,at 03:31 PM=
, Edward Capriolo &lt;edlinuxguru@gmail.com&gt; wrote:<br><br></div><div><=
blockquote type=3D"cite"><div><div class=3D"_stretch">On Fri, Sep 10, 2010=
 at 7:29 PM, aaron morton &lt;aaron@thelastpickle.com&gt; wrote:<br>=0A&gt=
; Am going through the rather painful process of trying to monitor cassand=
ra using Cacti (it's what we use at work). At the moment it feels like a l=
osing battle :)<br>=0A&gt;<br>=0A&gt; Does anyone know of some cacti resou=
rces for monitoring the JVM or Cassandra metrics other than...<br>=0A&gt;<=
br>=0A&gt; mysql-cacti-templates<br>=0A&gt; <a href=3D"http://code.google.=
com/p/mysql-cacti-templates/" _mce_href=3D"http://code.google.com/p/mysql-=
cacti-templates/">http://code.google.com/p/mysql-cacti-templates/</a><br>=0A=
&gt; - provides templates and data sources that require ssh and can monito=
r JVM heap and a few things.<br>=0A&gt;<br>=0A&gt; Cassandra-cacti-m6<br>=0A=
&gt; <a href=3D"http://www.jointhegrid.com/cassandra/cassandra-cacti-m6.js=
p" _mce_href=3D"http://www.jointhegrid.com/cassandra/cassandra-cacti-m6.js=
p">http://www.jointhegrid.com/cassandra/cassandra-cacti-m6.jsp</a><br>=0A&=
gt; Coded for version 0.6* , have made some changes to stop it looking for=
 stats that no longer exist. Missing some metrics I think but it's probabl=
y the best bet so far. If I get it working I'll contribute it back to them=
 Most of the problems were probably down the how much effort it takes to =
setup cacti.<br>=0A&gt;<br>=0A&gt; jmxterm<br>=0A&gt; <a href=3D"http://ww=
w.cyclopsgroup.org/projects/jmxterm/" _mce_href=3D"http://www.cyclopsgroup=
org/projects/jmxterm/">http://www.cyclopsgroup.org/projects/jmxterm/</a><=
br>=0A&gt; Allows for command line access to JMX. I started down the path =
of writing a cacti data source to use this just to see how it worked. Look=
s like a lot of work.<br>=0A&gt;<br>=0A&gt; Thanks for any advice.<br>=0A&=
gt; Aaron<br>=0A&gt;<br>=0A&gt;<br>=0A<br>=0ASetting up cacti is easy, the=
 second time, and third time :)<br>=0AAs for cassandra-cacti-m6 (i am the =
author). Unfortunately, I have<br>=0Abeen fighting the jmx switcharo battl=
e for about 3 years now<br>=0Ahadoop/hbase/cassandra/hornetq/vserver<br>=0A=
<br>=0AIn a nutshell there is ALWAYS work involved. First, is because as y=
ou<br>=0Anoticed attributes change/remove/add/renamed. Second it takes a h=
uman<br>=0Ato logically group things together. For example, if you have tw=
o items<br>=0A"cache hits" and "cache misses". You really do not want two =
separate<br>=0Agraphs that will scale independently. You want one slick st=
ack graph,<br>=0Awith nice colors, and you want a CDEF to calculate the ca=
che hit<br>=0Apercentage by dividing one into the other and show that at t=
he bottom.<br>=0A<br>=0AIf you want to have a 7.0 branch to cassandra-cact=
i-m6 I would love<br>=0Athe help. We are not on 7.0 yet so I have not had =
the time just to go<br>=0Aout and make graphs for a version we are not usi=
ng yet :) but if you<br>=0Acome up with patches they are happily accepted.=
<br>=0A<br>=0AEdward<br>=0A</div></div></blockquote></div></body></html>
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